Chapter 15: Problem 20

Fill-in-the-Blank When both a base class and a derived class have constructors, the base class’s constructor is called __________ (first/last).

Short Answer

Expert verified

Question: When both a base class and a derived class have constructors, the base class's constructor is called ___________ to set up its inherited members. Answer: first

Step by step solution

Understand base class and derived class constructors

Constructors are special member functions of a class that are executed whenever a new object of that class is created. They initialize the object and set its initial state. In object-oriented programming, a derived class can inherit properties and functions from a base class. When both the base class and the derived class have constructors, we need to understand the sequence in which these constructors are called.

Explain the constructor call order

When an object of a derived class is created, its constructor is called to initialize its own members. However, before the derived class’s constructor is executed, the constructor of its base class is called to set up its inherited members. Once the base class's constructor has finished, the derived class's constructor continues with initializing its own, unique members.

Fill in the blank

Based on the explanation in Step 2, when both a base class and a derived class have constructors, the base class's constructor is called "first" to set up its inherited members, before the derived class's constructor is called to initialize its own unique members. The correct answer to fill in the blank is: first.

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Fill-in-the-Blank When both a base class and a derived class have constructors, the base class’s constructor is called __________ (first/last).

Short Answer

Step by step solution

Understand base class and derived class constructors

Explain the constructor call order

Fill in the blank

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